You hustle
Well we are Grand Hustle, nigga we mastered it

from B.o.B (Ft. Morgan Freeman) – Bombs Away Lyrics on Rap Genius

Meaning

Many people brag about being hustlers, but it’s actually a shitty position to be in. Most only do it because can’t get a decent job. Meanwhile, B.o.B and others are at the top in Grand Hustle, a major record label.

Also, putting Grand in front of anything just makes it sound better:

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